Device for the evaporation of liquids and in the drying of substances



C. R. MABEE.

DEVICE FOR THE EVAPORATION 0F LIQUIDS AND IN THE DRYING 0F SUBSTANCES. APPLICATION FILED 05c. I5, 1913. RENEWED MAR. 18. 1920.

1,420,649. Patented June 27,1922. I

LIHUEHIOI 5% )murm STATES wear OFFICE.

CHARLES R. MABEE, 0F TOLEDO, OHIO.

DEVICE FOR THE EVAPORATION OF LIQUIDS AND IN THE DRYING OF SUBSTANCES.

Specification of Letters Patent.

Patented June 27, 1922.

Application filed December 15, 1913, Serial No. 806,889. Renewed March 18, 1920. Serial No. 366,962.

To all whom it may concern:

Be it known that I, Crmnnns R. MABEE, of the city of Toledo, county of Lucas, and State of Ohio, have invented certain new and usetul Improvements in Devices for the Evaporation of Liquids and in the Drying of Substances; and I do declare that the following is a full, clear, and exact description of the same.

This invention relates to the evaporation of water from solutions and mixtures and to the drying of substances by the combined action of heat and outward pressure upon the solutions, mixtures or substances operated upon against heated surfaces as a result of rotary motion applied thereto, the means for effecting said rotary motion being rigid in character and adjusted to the con tormity ot' the heated surface adjacent to which it is adapted to move as a result ol" said rotary motion.

To enable others skilled in the art to which it appertains to make and use the same, I will proceed to describe it with reference to the drawing, in which similar reference characters refer to similar parts in all the figures.

Figure 1 is a vertical section of my improved device, and Figure 2 is a top plan view of the same.

Referring more particularly to the drawings, l is the container of the general form of an upright cylinder, open at the top and having a closed bottom of conical or spherical contour, and provided in the convex cy' lindrical portion with a succession of circular flanges l5, perpendicular to the longitudinal axis of the container, spaced apart trom each other.

A steam jacket 2 encloses the container externally and affords means for the application ot heat externally thereto and is provided with a steam inlet 3 and an outlet 4t tor the removal of the water of condensation. A suitable support 5, attached transversely of the top of the container and having a bearing 6, supports a shaft 7 mounted in the longitudinal axis of the container and is supported at its lower extremity in a bearing 8. A plurality of blades 10, curved to approximately the cross-sectional form of the interior of said container, are ri idly attached to the shaft 7 interiorly oi the bearings, a collar 9 is attached to said shaft and bears upon the support 5 and the hearing 6 and assists in supporting the internal moving parts. Fan blades 11 are attached to the shaft above the collar and a pulley l2 above the tan blade. An oil-take pipe 13 leads centrally to the base of the container and is provided with a cock 14, furnishing means for the withdrawal of the finished product from the container.

The container being open to the atmosphere, the liquid to be treated may be supplied thereto in any convenient manner.

The operation of my device is as follows:

The liquid or substance to be treated having been introduced within the container, after the proper motion has been imparted to the arms 10, said liquid or substance has communicated to it through the revolution of said arms, a motion circumferentially of the container in the direction of the rotation of the arms, and under the centrifugal impulse thus imparted to it, rises vertically ot the cylindrical wall, in the form of a thin layer. The passage of the liquid or substance operated upon, under pressure over and against the heating surfaces hastens evaporation and rapidly reduces the liquid or substance operated upon to the deslred form for withdrawal from the container.

The vapors of evaporation are removed 'lrom the receiver by the rotary motion of the fan blades 11, which may be revolved in either direction.

In this invention, heat may be applied to the container by direct fire, hot gases, electricity or other suitable means.

lVhile the construction set out is excellently adapted for the employment of my invention in practice, I do not limit myself to the details as they may be modified without departing from the spirit of my invention.

It will be appreciated that by reason of the substantially unobstructed open end provided at the top of the container, a. h0ri--- zontally widely expanded outlet is provided for the copious discharge of vapors from the container, and the rapid escape of these vapors is accelerated by the action of the fan 11, or equivalent means. It will be further noted that the rapidly revolving conveyor means is constructed and arranged whereby to leave an interior vapor zone for the reception of the vapors as they pass from the moving layer of material under treatment, and from the said zone these vapors will readily escape as aforesaid.

having, innnediately above the I tiled .l e Serial No. 40,757, liled duly No. 77,996, filed .i ebruary filed Oct. 23, (renewe i08,956); Serial No. 805,598, r her 9, 1913; Serial No 808,888 .15, 19.13 (renewed as i"i(ill2il l and Serial No. 806 891 tiled Deeinber i913 (renewed as CwQl'Hll F o. I I I reserve the right to claim in. my copenoing applications the novel subjectsanatter therein disclosed and not herein claimed.

Having thus fully described my invention What I claim is 1. In an open evaporating and drying device, in combination. an upright substantially cylindrical container. means tor applying heat to the container externally thereof. rapidly and horizontally rotating internal arms lor engaging}; and pot tively communicating circumtereatiai the surface of the container to th under treatment and causi material i a )"w rd supporting said contents.

In an evaporating; and i evice,

the combination ot an y in substantially cylindrical container, a nly and horizontally rotating internal means for connnunicatin motion centri tugally and circumterentiallv or said container to the contents thereoii: to cause the upward movement of said contents, and stationar; neans adjacent to the interior Wall of tainer ilor supportinn said cont i: parts being constructed and arran 'e 1 by to maintain a substantially unibnstr central zone for the escape of vapor the material under treatment, said cor sad ing means a horizontally expanded per nently opened passageway tor the of said vapors.

3. In an evaporating and drying a tubular container having a substantially unobstructed outlet tor the escape of vapors, rigid means internally ot the cbntair. for positively comnnu'iicatin motion circui erentially thereof to the contents of the conlevice I thro u i the o utlct.

ii. In an evaporating and drying device, combination externally heated snlistan ly ylindrical container having a i substantially unobstructed open end for the line escape oi vapors and gases, rigid means 4 adapted to the contormity of the interior ace of the container for communicating in circun' erentially thereoi to the con- ..s ol' the container, said parts being constructed and arranged wherein to maintain a :uibstantially unobstruct/ rel zone in uucation with said open end, and for lying the vapors and gases from the manereby the same be rapi y dised through said open end, and spaced lixeu siupportino members adjacent to the interior Wall oi" the container tor supportthe contents, substantially as and tor the u pcse described.

i i in an evaporating and drying device, in combination, a container, means tor app ng heat externally thereto, rapidly and horizontally rotating mains internally cot tor positively coinn'iunicatingcenugal and circu "erential motion to the tents th reof in thin layer formation and iintaininq' a quiet central. zone means for -tl1drawing the gases and vapor of evaporation tronl said zone and means for supzhe contents adiacent to the interior '5 the container.

an evaporating and drying device,

top, means for applying heat exterthereto, means internally thereot roa high speed :tor communicating nteuts thereof in layer formation and ahty o't tan blades externally of the ioiation from the snaco Within said layer n'iaterial, means for driving said ian s and means for ,upporting the con- 'ltS oi" the container adjacent to the inter or Wall thereof.

I. in an evaporating and drying device,

in combination. a heated cylindrical container, plurality of rigid arms centrally mounted Within said container and conformed to the shape of the longitudinal cross-section thereof, a plurality of fan blades ally of the upper rim there-0t, means arting a rapidv rotary motion to said arms and said fan blades and spaced apart means adjacentzto the interior Walls thereof for supporting the contents of said container.

S. In an pen evaporating and drying devlce, in combination, a heated cylindrical container, a plurality of arms mounted within said container parallel to the axis thereof, a succession of annular steps formed with the internal wall of said container, means for imparting a rapid rotary motion to said arms, said container having an out let for the vapor of evaporation and means independent of the arms for withdrawing the vapor of evaporation said container having a horizontally widely expanded outlet for the vapor of evaporation through said outlet.

9. In an open evaporating and drying device, in combination, a heated container, a support transversely of the top thereof, a shaft axially mounted in said support, a plurality of blades conformed to the crosssectional shape of said container mounted on said shaft, a conducting pipe centrally of the bottom of the container, a plurality of fan blades mounted on the shaft externally of the container adapted to drive the vapor of evaporation upwardly or downwardly, and means for imparting rotary motion to said shaft and said fan blades, and a succession of circular flanges formed with the internal wall of the container for supporting the contents thereof adjacent to the interior wall thereof.

10. In an evaporating apparatus of the character described, the combination of an upright container having a cylindrical wall, and a curved bottom, a surrounding jacket for steam or the like, a vertically disposed shaft, a plurality of blades curved in substantial accordance with the curvature of the internal wall of the container, horizontally disposed ring-shaped supports mounted upon the wall of the container, said container being open at its top, a fan mounted upon said shaft adjacent the open top of the container, and means for rotating said shaft.

ll. In an evaporating apparatus, the combination of a container having a substantially cylindrical wall with an opening at one end, means for heating said wall, a plurality of conveyor means within the conveyor extending longitudinally of said wall, a rotatable shaft for said conveyor means, and a plurality of circumferentially extending projections interposed between said conveyor members and the circumferential wall of the container forming places of deposit for the material under treatment, and a fan member fixed to said shaft adjacent said opening in the container.

12. In an evaporating apparatus, the combination of a substantially vertically disposed container having a substantially cylindrical wall, with a closed curved lower end having a valve-controlled outlet, and an open upper end, means for heating the vertical wall of the container, a plurality of conveyor means within the container extending longitudinally of said wall, a 1'0- tatable shaft for said conveyor means, a plurality of circumferentially extending projections on the inner face of the side wall of the container, and a fan member fixed to the shaft at a point adjacent the open end f the container for withdrawing vapors from within the container.

13. In an evaporating apparatus,thecon1- bination of a vertically disposed container having a curved interior treating surface, said container having a surrounding heat jacket, means for introducing steam to said jacket whereby to impart to the said treating surface a temperature sufficient to evaporate liquid constituents of the material under treatment, said container having a horizontally widely expanded vapor outlet at its top for the copious discharge of vapors from the container, conveyor members extending longitudinally of and adjacent to said treating surface, means for supporting said conveyor members whereby to leave a substantially unobstructed interior zone for vapors, means for rapidly rotating said conveyor members whereby to cause the material under centrifugal force to move circumferentially and lengthwise of the treat ing surface in the form of a layer, and means operatively associated with the copious discharge opening for rapidly exhausting the vapors from said interior zone.

In testimony whereof, I have hereunto subscribed my name in the presence of two subscribing witnesses, this 24th day of November, 1913.

CHARLES R, MABEE.

\Vitnesses H. O. MARTIN,

C. A. DAVIS. 

